Crystallizing coating composition



.position which'when applied in the conventional to be finished andairdried to provide it with a baked provid character. 1

My improved crystallizing lacquer is made by T r r ver 9 l I -7 os rao STATES PA ENT} ,oss es 'f 2,344,191 1 oaysramzmc course comrosmos William A. Waldie, Dayton, hio, assignor, by

mcsne assignments, to Chemical Developments r I, I vcllllll-poratiom'nayton Ohio, at corporation-of- No Drawing. Application April 12, 1941, 1 Serial No. 388,340 I BCialms. (Cl. 106-173)' t This invention relates to a composition and out restricting the'sam'e thereto; the following method of making a crystallizing lacquer. The formulations are given:

coating composition is adapted for decorating metal, glass, wood, fabric, paper and the like so I as t provide. it with a pl asing, durable'finish o Acetanilide -V- having a crystalline surface pattern. Denatured ethyl h e-r f- -k- -r One of the principal objects of'this invention'is The crystalline t m stirred n o the o m a oat compositioe w h, can alcohol and dissolved to form the crystallizing applied by spraying, flowing or dipping and which solution v k will dry to a tough, wear resistant film which has 1 V mi), [I a substan ially uniform crystalline-like surface. i V

Another object is to provide a coating composi- 1 cellulose -Y- -Y- tion which can be used as a one .coat finish for Hlgh solvency naphtha tar on I articles petroleum naphthal gals 115-120 Another objectis to make aliquid coating com- 15 Butanol -----.--r 22 position which can be applied to a s rface y The ethyl cellulose, is dissolved in the combine.- praying and dried to pro a tough, adherent, tion of solvents to produce a-cellulose film formcrystalline finish of uniform texture. ing constituent.

.Another objectis to provide an air drying or Example III forced air d ying coating composition which can a I I v a be applied as a. varnish,paint or enamel to pro- In forming the cryspanm/ng lacquer a a I the followingisused. duceacrystalllne w h. t I v J I is Gallons Theseand meets and advantages Ethylcellulose solution' 'rzxample m 8-10 appear from the'iollowingdescription. i i r o I I have discovered that a c rystallizingjcoating 5 ff fm e en l l lm composition can be made by cold cutting cerq i" v taln crystalline substances in a volatile solvent L a- -".=""T" "f 4 and incorporating this in difierent film forming The .vcrystallizing'lacquer made as disclosed in ingredientssuch as utilized in making lacquers, Example III is a substantially clear composition varnishesrpaints and enamels. I produce a comwhich can be sprayed-ontothe article'or surface manner as paints and lacquers and air dried or tough, adherent crystalline coating. The ethyl es a durable finish of a crystalline cellulose is a formin constituent and the Heretofore. so-called "crysta1line or frosty Where it is desired to have apigmented or finishes have been made by drying compositions coloredcrystalline coating, this'may be eflected comprising substantial amounts or China-wood by adding pigment dispersed in the'film' forming oil or the like highly unsaturated oils under speconstituentsimilarly as'lni themakinglof paints, cial atmospheric conditions but my crystal ine *enamels and the like. =As a'typlcalxa'mple; the finishdiflers essentially fromthistypeof coating. e l 9 ss I In' prior crystalline finishes the-surface of the E driedcoatingfilmisroushandbrokenduetothe Ethyl iormation'of contiguous crater-like imperfections. am f o ls On-the contrary, the crystalline film formed by Acetaimde u I I "57;; my coating composition is substantially smooth lution (Example I) I i 4 6 gals and continuous over the surface of the finished Pigment groundv in Halos; 1 article and is me m craters and ridges which solution (Example m'- Added in amount detrimentally street the durability-of the finish. w to produce combining a crystalllzing sunstance with a film a d forming constituent and dissolving the mixture of Amyl alcohol (Pentasol) Added in sumsubstances in a common solvent to form a coatvcient amount to in; composition. In general, I have found -that provide aspray: the crystallizing substance should be dissolved in able composia low boiling solvent so that the composition, t o

when applied as a film and air dried, will produce w wspirit soluble dye, suchis a crystalline finish. I line or the like, may be employed with or with- A typic l xamples of my invention and witho out pigment particles. In this-instance, a sumcost denatured tate, dextran acetate,

limited to the in the examples but may be modified to suit difcient amount of the dye is dissolved in the ethyl incorporated constituents.

iilm.

In the foregoing examples,

' quer is formed by "cold cutting'..the constituents is applied and air dried or as in the case of nitrothe like cellulose and thecomposition force air dried similarly cellulose, ethyl cellulose and lacquer compositions.

In place of acetanilide as the crystallizlng substance, there may organic crystallizing solved in the solvent and will crystallize out upon evaporation of the anilide because of its ready solubility inthe low alcohol solvent and also because it has very little odor.

As examples of other crystallizingmaterials such as saliformin and the like may be used.' The crystalline substance selected should is readily dissolved in the ordinary commercial solvents and one which act with the other constituents to form a noncrystallizing compound. It is also desirable to select a crystallizing substance which will produce the crystalline eflect with the use of a minimum amount of material and solvent.

In place of ethyl cellulose, other'film forming ingredients, such as nitrocellulose, cellulose aceshellac, dammar, accroides, manila, sandarac, elemi and ester gums may beutilized. These gums are preferably spirit soluble and have been dewaxed.

Various resins, no.

cellulose ester or ethyl used to modify the cellulose ester or ether and produce a tough, drying oil modified film forming constituent. This is incorporated with sufficient amount of tallizing substance vent toproduce a crystalline drying coating com- It will be understood that my invention is not specific composition as illustrated ierent conditions and uses without departing from the spirit and scope of my invention.

Having thus 'iully described my invention, what I claim as new and desire to secure by ters Patent is:

1. A crystallizing coating composition comwith the film formin composition exhibits.

solvent. I prefer to use acetmodified alkyd resins which accroides, manila, sandarac, eleml or 14 to 18 pounds of acetanilide dissolved in 6 to 10 gallons of alcohol; 6 to 8 gallons of a solution comprising 150 to 170 pounds ethyl cellulose, to gallons hydrocarbon solvent and 18 to 22 gallons 0! butanol; and 1 to 4 gallons of amyl alcohol.

2. A crystallizing coating composition comprising: 4 to 6 gallons of a solution comprising 14 to 18 pounds of a substance selected from the class consisting of acetanilide, salicylic acid, phthalic acid and saliformin, and 6 to 8 galions of alcohol; 6 to 8 gallons of a solution comprising to 1'70 pounds of a substance selected from the class consisting of ethyl cellulose, nitrocellulose, cellulose acetate and dextran acetate, 115 to 120 gallons of hydrocarbon solvent, and 18 to 20 gallons of butanol; and 1 to 4 gallons of a'myl alcohol.

3. A crystallizing coating composition comprising: 4 to 6 gallons of a solution comprising 14 to 18 pounds of a substance selected from the classconsisting of acetanilide, salicylic acid, phthalic acid and saliformin, and 6 to 8 gallons of alcohol; 6 to 8 gallons of a solution comprising 156 to pounds of a substance selected from the class consisting. of shellac, dammar,

and ester gums, 115 to 120 gallons of hydrocarbon solvent, and 18 to 20 gallons of butanol; and 1 to 4 gallons of amyl alcohol.

4. A crystallizing coating composition comprising 4 to 6 gallons of a solution consisting of 14 to 18 pounds oiacetanilide dissolved in 6 to 10 gallons of alcohol; 8 to 10 gallons of a solution comprising 150 to 170 pounds of ethyl cellulose, 115 to 120 gallons of hydrocarbon solbutanol; pigment ground in said cellulose solution in quantity suiflclent to yield the desired hue; and amyl alcohol in quantity sufilcient to produce a sprayable composition.

5. A crystallizing coating composition comprising 4 to 6 gallons of a solution comprising 14 to 18 pounds of a substance selected from the group consisting of acetanilide, salicylic acid, phthalic acid and saliformin, and 6 to 10 gallons of alcohol; 8 to 10 gallons of a solution comprismg 150 to 170 pounds or a substance selected from the group consisting of ethyl cellulose, ni-

trocellulose, cellulose acetate and dextran aceprising 4 to 6 gallons of a solution comprising 14 to 18 pounds of a substance selected from the group consisting of ;.acetanilide, salicylic acid, phthalic acid and saliiormin, and 6 to 10 gallons of alcohol; 8 to 10. gallons of a solution comprising 150 to 1'10 pounds of a, substance selected from the group consisting of shellac, dammar, accroides, manila, sandal-ac, elemi .and ester gums llfd to 120 gallons 0! hydroca' f ion solvent and 18 to 2 2 gallons of butanol; pigment ground in .oil in quantity vsumcient'to produce the desired hue; and amyl alcohol in quantity sulficient to produce a sprayable composition. 7

WILLIAM A. WAI-DIE. 

